Sawing and planing by combining a plane with a saw



ELIJAH PRATT, OF GRANVILLE, NEV YORK.

SAWING AND PLANING BY COMBINING A PLANE WITH A SAW.

Specification of Letters Patent No. 3,184, dated July 20, 1843.

To all whom t may concern Be it known that I, ELTJAH PRATT, ofGranville, in the county of lVashington and State of New York, haveinvent-ed a new and useful Machine for Planing Boards while Sawing; andI do hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,in which- Figure l is a vertical section through the saw gate showingthe saw and plane. Fig. 2 contains detached parts.

The same letters of reference applying to both figures.

The nature of my invention consists in connecting with the saw of a sawmill, a plane in the same frame, both being held by the same stirrups;and also the method of constructing the plane therefor.

To a saw gate of common construction (a) are two stirrups (Z2) fastened,also formed in the usual way, but a little stouter, and of about doublethe width; in the front part of these stirriups a saw (c) is strained,and directly behind it is placed a flat plate of metal (ci) which isalso strained into the same stirrups; in this plate there is anoblongmortise ((Z) in which the plane iron is set.; sections of this plate andmortise is perspective are represented in F ig. 2. Across the mortise(cZ) there is a knife (c) horizontally placed, the lower edge of whichis slanting at an angle of 20 more or less; one end being' made narrowerthan the other.

The edge of this knife projects a little beyond the plate and on itsopposite or beveled side there is an iron like that of the Icommondouble iron plane except that it is placed on the reversed side of thecutting iron and its edge is more turned over (see (fr) Fig. 2), thecutting iron is constructed with flanges at each end set a little backof the fan of the cutter and parallel with it; these flanges are let inflush with the plate, and are fastened to it with screws. To alter theset of the plane pieces of paper or other thin material can be put inthe recesses of the plate (d) before the plane is put in place.` Theforward end of the plane is not set quite as rank as the other end, sothat a proper thickness is gradually out from the board, or the set ofthe plane may be varied to suit the purposes of the operator. Thevertical section of the plane iron is a little concave on the face andits horizontal section more or less convex.

l/Vhat I claim as my invention and desire to secure by Letters Patentis- The combination of the plate (d) containing the plane (e)constructed and arranged as herein discribed, with the saw of a saw millin the manner and for the purpose substantially as above specified.

ELIJAH PRATT. itnessesz J. J. GnEENoUoH, T. C. DoNN.

